After months of training, promotion, trash talk and speculation from every corner of the boxing world, all that's left to do now is fight.

On Saturday night, pound-for-pound king Floyd Mayweather Jr. will step through the ropes at the MGM Grand for the first time in nearly a year to defend his WBC welterweight championship against the rugged and dangerous Robert Guerrero in one of the most anticipated fights of 2013.

At the end of the night, only one man will have his hand raised in victory. Will it once again be Mayweather as he takes another step toward boxing immortality? Or will it be the man known as "The Ghost" who shocks the world and becomes the first man to dethrone "Money" Mayweather?

Read on as the Bleacher Report staff breaks down the fight and gives you all the predictions and analysis you can handle!

Zachary Alapi

Al Bello/Getty ImagesMayweather is just too good.

Who Wins the Fight? When and How? Floyd Mayweather Jr. will win what promises to be an entertaining fight. Guerrero is both rugged and skilled, but his pressure tactics will play right into Mayweather's hands, which should lead to a Round 11 stoppage. Don't be surprised if Mayweather busts up Guerrero's face; a conventional knockout is less likely.

The Moment We’ll Remember the Most Is: Given the way he fought against Andre Berto, Guerrero should have some moderate success working his way into Mayweather's chest and trying to back him into the ropes. A big, fight-changing moment will occur the first time Mayweather rocks Guerrero with his back to the ropes and then proceeds to whack Guerrero toward the center of the ring.

Who Will Be with Floyd During His Entrance? Larry Merchant, two IRS agents and Manny Pacquiao. In all seriousness, 10 to 15 interchangeable bodies wearing TMT jumpsuits, and maybe Justin Bieber.

Who Will Floyd Fight Next? When and Where? People are going to be clamoring for Mayweather to fight Saul Alvarez. Because Timothy Bradley is currently slated to fight Juan Manuel Marquez on Sept. 14 (to coincide with Mexican Independence Day weekend), a typical Mayweather date, the push for Mayweather-Alvarez to supplant this could reach a fever pitch. It would also be surprising if Mayweather didn't fight in Las Vegas.

Who Will The Ghost Fight Next? When and Where? Operating under the assumption that Guerrero will lose to Mayweather, perhaps a rematch with Andre Berto is in order. Should Berto look impressive against Jesus Soto Karass in July, it could be the ideal time to revisit one of 2012's best fights.

Alejandro Burgos

Jeff Bottari/Getty ImagesGuerrero will come up short in his bid to upset Money Mayweather.

Who Wins the Fight? When and How? Floyd Mayweather is the best fighter in the world, period. This fight is about what Floyd will do and what Robert won’t do, not the other way around. We’ll get some good action early on, but Floyd will settle in, land cleaner hits and win by a clear, unanimous decision.

The Moment We’ll Remember the Most Is: Floyd standing in the pocket, taking Robert’s best shots and giving even better in return—a la the Mayweather versus Mosley fight.

Who Will Be with Floyd During His Entrance? Nothing is impossible. The Dalai Lama? Lindsay Lohan? I’ll go with Adrien Broner and Justin Bieber.

Who Will Floyd Fight Next? When and Where? This is a tough question, but if Floyd dominates like I think he will, I believe he’s going to lock up his September date with the Mexican Blake Griffin, Saul “Canelo” Alvarez. That fight will break pay-per-view sales records.

Who Will The Ghost Fight Next? When and Where? Assuming Guerrero loses but doesn’t look totally out-classed, I believe he looks at Victor Ortiz or the winner of Josesito Lopez vs. Marcos Maidana.

Lyle Fitzsimmons

Jeff Bottari /Getty ImagesHe's just too good.

Who Wins the Fight? When and How? Mayweather by TKO in the middle to late rounds—say the 10th, to be specific—after an accumulation of precise blows that gradually show Guerrero his past opposition wasn’t a proper gauge for the pound-for-pound kingpin’s skill set.

The Moment We’ll Remember the Most Is: When Mayweather and Guerrero embrace in center ring after the fight, while their respective lead trainers—their fathers—are being closely watched by every on-hand security guard.

Who Will Be with Floyd During His Entrance? In a move that’s sure to grind the role model-conscious Guerrero’s gears, Mayweather emerges from the locker room with multiple-time rehab jumper Lindsay Lohan as his celebrity in residence.

Who Will Floyd Fight Next? When and Where? Presuming things go as planned, expect Mayweather to face prized Golden Boy possession Canelo Alvarez—either for Mexican Independence Day weekend in September or this time next year—right back at the MGM Grand.

Who Will The Ghost Fight Next? When and Where? Guerrero will lick his wounds and return to a still-lucrative second tier of the welterweight division, where he’ll meet another former Mayweather victim—Victor Ortiz—in a late fall slugfest in Los Angeles.

Brian Mazique

Al Bello/Getty ImagesMayweather wins but not easy.

Who Wins the Fight? When and how? Floyd Mayweather Jr. will win the fight by unanimous decision. This will be one of Money’s toughest fights, but in the end his ability to adjust will spur him to victory.

The Moment We’ll Remember the Most Is: The end of the fight when all the Mayweather haters expect Money to say something outlandish, but instead he’ll be humble and respectful to Robert and Rueben Guerrero.

Who Will Be with Floyd During His Entrance? This is hard to predict, but I’d love to see Slaughterhouse. There is no special connection, they’re just one of my favorite groups.

Who Will Floyd Fight Next? When and Where? I’m going to step out on a limb a bit and predict he fights Kell Brook next somewhere in the UK in November. The Money Team indicated they would be interested in fighting in front of the British fans, so this would be a great time to make the trip.

Who Will The Ghost Fight Next? When and Where? Guerrero’s next fight is more difficult to predict, as it could be almost anybody. A November bout with Devon Alexander in Las Vegas seems logical.

Kelsey McCarson

Ethan Miller/Getty ImagesGuerrero will bust "The Ghost" on Saturday night in Las Vegas.

Who Wins the Fight? When and How? Floyd Mayweather will win in devastating fashion. He'll be too fast for Guerrero, and he'll knock him around the ring with shocking ease without catching much in return for a TKO in Round 6.

The Moment We'll Remember the Most Is: I expect Mayweather to deliver the moment of the night with a supreme ring entrance. If he comes to the ring sporting the Ghostbusters theme song, I take full credit for having tweeted it to him the day the fight was signed.

Who Will Be with Floyd During His Entrance? I can't imagine anything better than theGhostbusters cast of Bill Murray, Dan Aykroyd, Harold Ramis and Ernie Hudson. In fact, I demand this...

Who Will Floyd Fight Next? When and Where? Floyd should fight Canelo Alvarez this September in Las Vegas. However, his history tells me he'll end up fighting someone less likely to upset him, like Devon Alexander.

Who Will The Ghost Fight Next? When and Where? Guerrero will look to rebound with a fan-friendly fight against someone like Josesito Lopez or Marcos Maidana in the fall, probably in his home state of California. He'll want to get back in the win column against a name opponent so he can get back in line for an alphabet title belt.

Kevin McRae

Ethan Miller/Getty ImagesMayweather will be all smiles when the scores are read.

Who Wins the Fight? When and How? You can bank on Floyd Mayweather Jr. winning this fight in similar fashion to all his previous bouts. Robert Guerrero provides some unique stylistic problems for Money, but there is simply nobody better at finding and exploiting holes in his opponent's game. You may see a close fight early, but Mayweather's trademark speed, defense and boxing intellect will propel him to a unanimous decision in the 117-111, 116-112 score range.

The Moment We'll Remember the Most Is: Who doesn't want to see Ruben Guerrero and Floyd Sr. accompany their sons to the center of the ring for pre-fight instructions? We might see a fight before the fight.

Who Will Be With Floyd During His Entrance? Aside from about a dozen Mayweathers, how about Floyd shocks the world and totes 50 Cent out there with him? Sure, the two had a highly publicized "feud" in recent months after the falling out of their business partnership, but wouldn't that make for an interesting side story?

Who Will Floyd Fight Next? When and Where? The public will clamor for a matchup with Canelo Alvarez in the fall. That's clearly the biggest fight out there in terms of money and publicity, and it's aided by the lack of many other truly attractive options. Devon Alexander has no drawing power and Amir Khan isn't credible. Look for Canelo in Vegas.

Who Will The Ghost Fight Next? When and Where? Guerrero is still facing uncertainty over a gun charge in New York City. Should that get resolved favorably, he could also return in the fall, likely in a venue like the Home Depot Center in California, against the winner of Marcos Maidana and Josesito Lopez. That'd be another good action fight and would sell well in California.

Briggs Seekins

Al Bello/Getty ImagesAnd still champion...

Who Wins the Fight? When and How? Robert Guerrero is a tenacious warrior with underrated skills, and he's going to make this a dog fight. But Mayweather is simply too talented for him and will win by TKO in Round 9 or 10.

The Moment We’ll Remember the Most Is: Guerrero will fight heroically until the bloody end. The takeaway moment is going to be a defenseless Guerrero, eyes swollen shut, being saved by the referee while Mayweather unloads on him.

Who Will Be with Floyd During His Entrance? This is a tough one: Who would ever have expected Mayweather to come out with Justin Bieber? I remember an interview afterward when he bragged that he would be able to get Obama to come out with him if he put in the call, so that's who I'm predicting: President Barack Obama.

Who Will Floyd Fight Next? When and Where? With Sergio Martinez now out for the rest of the year, I see only one possibility left: Saul Alvarez. It will happen on Mexican Independence Day weekend in September.

Who Will The Ghost Fight Next? When and Where? If Guerrero does much better than expected and Adrien Broner handles his business against Paul Malignaggi, I think Guerrero-Broner is going to happen by the end of the year. If Guerrero takes a significant beating, he's going to be out for the rest of the year and will come back in 2014 for a rematch with Andre Berto.

Steve Silverman

Ethan Miller/Getty ImagesThe Ghost is taking a huge step up in class and will not be able to handle it on Saturday night.

Who Wins the Fight? When and How? Floyd Mayweather wins the fight by unanimous decision. It will be a decisive victory, as Robert Guerrero won’t win more than two rounds.

The Moment We’ll Remember the Most Is: Guerrero will become completely unglued by Mayweather’s speed and quickness. Mayweather’s ability to evade punches will make the challenger look awkward and unbalanced.

Who Will Be with Floyd During His Entrance? Mayweather, of course, is known for his gaudy entrances that have featured the likes of Mark Cuban and Helio Castroneves in the past. This time he enters the ring with Super Bowl MVP Joe Flacco.

Who Will Floyd Fight Next? When and Where? Mayweather is going to push himself and line up a fight with Canelo Alvarez. It’s another Las Vegas production and will take place in November.

Who Will The Ghost Fight Next? When and Where? Guerrero will have to rebuild his reputation because he will get outclassed by Mayweather. He will face a challenge from British fighter Kell Brook in September. Guerrero will go overseas to take on Brook in Great Britain.

Jonathan Snowden

Al Bello/Getty ImagesLove him or hate him, he'll do it again on Saturday night.

Who Wins the Fight? When and How? Floyd will be Floyd, answering Guerrero's aggression with the best counter punching in the game. The Ghost will hang tough as the fight will stay close early, but then Mayweather will pull away to prevail in a unanimous decision.

The Moment We’ll Remember the Most Is: At some point in the fight, Guerrero, frustrated by Floyd's defense, will miss wildly with a left hand and eat a right hand directly on the button. It will remind us that beneath the bombast, Mayweather is a genius with his fists.

Who Will Be with Floyd During His Entrance? After Justin Bieber, all bets are off. I'm always hoping for Tiny Lister, aka Deebo from Friday on his tiny Floyd-sized bike. A man can dream.

Who Will Floyd Fight Next? When and Where? Mayweather has talked about a return as early as September. If you've followed his career closely, you understand predicting when Floyd will fight next is a thankless and daunting task. Who would I like him to fight next? Canelo Alvarez. When? As soon as humanly possible. Regardless, Floyd's next bout is sure to be in Las Vegas.

Who Will The Ghost Fight Next? When and Where? He'll have the name and profile to match up well with Adrien Broner in Vegas this winter.